Winix - 5500-2 vs Xiaomi - Mi Smart Air Purifier 4 Pro
Between the 5500-2 and Mi Smart Air Purifier 4 Pro, the 5500-2 comes out ahead in min noise, while the Mi Smart Air Purifier 4 Pro wins on coverage and cadr. Overall, the 5500-2 scores 56.9 and the Mi Smart Air Purifier 4 Pro scores 70.3 on our Mars Score.
Which should you buy?
The Mi Smart Air Purifier 4 Pro is the clear pick on raw spec strength, leading by 13.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the 5500-2 if you care most about min noise. The biggest gaps in its favor are min noise.
Pick the Mi Smart Air Purifier 4 Pro if you care most about coverage and cadr. Its strongest claims are coverage, cadr, true hepa h13+.
Both ship with comparable activated carbon, so those specs don't separate the two — focus on the differences below.
Bottom line: the Mi Smart Air Purifier 4 Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Winix - 5500-2 wins
- ▲Min noise — 5.00 dB less. 27 vs 32.
Why Xiaomi - Mi Smart Air Purifier 4 Pro wins
- ▲Coverage — 81.82% more. 60 m² vs 33 m².
- ▲CADR — 20.48% more. 500 m³/h vs 415 m³/h.
- ▲Has True HEPA H13+.
Spec comparison
Performance
| Spec | Winix - 5500-2 | Xiaomi - Mi Smart Air Purifier 4 Pro |
|---|---|---|
| CADR | 415 m³/h | 500 m³/hlead |
| Coverage | 33 m² | 60 m²lead |
| True HEPA H13+ | false | truelead |
| Activated carbon | true | true |
Smart & Noise
| Spec | Winix - 5500-2 | Xiaomi - Mi Smart Air Purifier 4 Pro |
|---|---|---|
| Min noise | 27 dBlead | 32 dB |
| Air quality sensor | true | true |
| Smart app | false | truelead |
Frequently asked
Spec-level deep dives
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